JPH1199966A - Hinge structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] When a running vehicle collides with an obstacle, an impact of a secondary collision between the obstacle and the upper surface of the hood of the vehicle is absorbed and mitigated, and a vehicle jumps up to protect the obstacle. To provide a hinge structure for a hood. SOLUTION: This is a hood hinge structure for a vehicle constituted by connecting a plurality of links.
The link 3 defining the height is provided with at least one bent portion 3a in the axial direction in the vehicle longitudinal direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vehicle for driving a vehicle that collides with an obstacle.
Further, the upper part of the obstacle falls down on the hood and absorbs and relaxes the impact at the time of the secondary collision with the upper surface of the hood, and is a hinge structure of a flip-up hood of a car for protecting the obstacle,
In particular, it relates to a structure for controlling a load at the time of a collision.

[0002]

2. Description of the Related Art Conventional flip-up hoods are disclosed in Japanese Utility Model Laid-Open No. 49-110432 and Japanese Patent Laid-Open No. 59-26.
No. 370, which are used when an obstacle collides.
This is an example in which a rear end of the hood is flipped up to provide a clearance between a structure in the engine room and the hood, thereby absorbing and mitigating a collision impact. The flip-up hood is configured to raise the rear end of the hood and take clearance,
It is necessary to have a structure having a center link so as not to generate an excessive reaction force when an obstacle falls just above the hinge. FIG. 8 shows a conventional example of a hinge structure having two links without a flip-up mechanism, and FIG. 9 shows a conventional example of a hinge structure having a flip-up mechanism. In FIG. 9, reference numeral 103 denotes a center link 103, and an upper end of the center link 103 is a hinge 10 on the hood inner side.
2 and a pin hole 106, and a lower end of the center link 103 is connected to the vehicle body pedestal 104 by a slide hole 104a.

[0003]

However, since the conventional center link is a flat plate, there is a problem that when an obstacle falls down just above the hinge, the center link is deformed by buckling and generates a reaction force. is there.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention detects a collision with an obstacle, and flips up a rear end of a hood with an actuator, so that a center link of a hinge mechanism in which the hood is flipped up and a normal opening / closing operation is achieved. To have an easily deformable structure against a load in a specific direction. As a means for solving the above problems, the present invention is an obstacle detection means,
The actuator that flips up the rear end of the hood and the hood lock device at the front of the hood rotate around the fulcrum to maintain the hood's flipping position and the hood's flipping state to ensure clearance between the hood and the vehicle body. A hinge mechanism having a slide portion, wherein at least one bent portion is provided on the center link serving as the slide portion.

[0005]

According to the above-described structure, the obstacle detecting means disposed on the vehicle body detects a collision, the rear end of the hood is raised by the actuator, and the hood is supported by the left and right center links and the hood lock. It has become. Since the center link has a portion extending in the vehicle longitudinal direction, the hood pedestal portion and the vehicle body pedestal portion are offset from each other by a thickness greater than the thickness of the center link. In this state, even if a load in the vertical direction of the hood is applied to the upper end of the center link due to the fall of the obstacle, a bending moment proportional to the offset amount of the pedestal is generated on the center link, and the reaction force against the obstacle is reduced. It has become.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment in which a hood flip-up hood of the present invention is applied to a vehicle will be described with reference to FIGS.
A description will be given based on FIG. FIG. 1 is an overall perspective view showing a hinge structure according to the first embodiment, which is a hinge structure using a center link 3. The center link 3 is connected to the hood inner side hinge 2 by a pin hole 6, and the lower end of the center link 3 is connected to a slide hole 4 a of the vehicle body pedestal 4. The center link 3 has a bent portion 3a in the axial direction in the vehicle front-rear direction.

FIG. 2 is a side view showing a state in which the hinge structure of the first embodiment performs a normal opening / closing operation. FIG. 3 is a side view showing a state in which the hinge structure of the first embodiment is performing a flip-up operation. The hood 1 is moved upward by an actuator such as an airbag 9.

FIG. 4 is a front view of the first embodiment.
Is shown. A bent portion 3a is provided at a part of the center link 3, and when a load F is applied to the upper end of the center link 3, a moment M = F · l is generated at the bent portion end 3b.

FIG. 5 is an overall perspective view showing the hinge structure according to the second embodiment, in which bent portions 3a, 3a are provided near the joints at both ends of the center link 3, respectively.

FIG. 6 is an overall perspective view showing a hinge structure according to a third embodiment, and FIG. 7 is an overall perspective view showing a hinge structure according to a fourth embodiment. These are hinge structures having no flip-up mechanism. A bent portion 10 a is provided on a vertical wall portion 10 provided on the vehicle body pedestal portion 4.

[0011]

As described above, according to the present invention, at least one bent portion is provided in the link defining the height of the hood at the time of collision in the axial direction in the vehicle longitudinal direction. With the configuration, the effect of reducing the reaction force against the obstacle and absorbing and relaxing the impact can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a hinge structure according to a first embodiment.

FIG. 2 is a side view showing a state where the hinge structure according to the first embodiment is performing a normal opening / closing operation.

FIG. 3 is a side view showing a state where the hinge structure according to the first embodiment is performing a flip-up operation.

FIG. 4 is a front view (part) of the hood according to the first embodiment when the hood is open;

FIG. 5 is an overall perspective view showing a hinge structure according to a second embodiment.

FIG. 6 is an overall perspective view showing a hinge structure according to a third embodiment.

FIG. 7 is an overall perspective view showing a hinge structure according to a fourth embodiment.

FIG. 8 is an overall perspective view showing a conventional example of a hinge structure having two links without a flip-up mechanism.

FIG. 9 is an overall perspective view showing a conventional example of a hinge structure having a flip-up mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hood 2 Hood inner side hinge 3 Center link 3a Bending part 3b Bending part end part 4 Body pedestal part 4a Sliding hole 5 Body side base 6 Pin hole 7 Pin hole 8 Connecting pin 9 Air bag 10 Vertical wall part 10a Bending part 101 Hood 102 Hood inner side hinge 103 Center link 104 Body pedestal 104a Sliding hole 105 Body side base 106 Pin hole 107 Pin hole 108 Connecting pin

Claims (3)

[Claims] 1. A hood hinge structure for a vehicle configured by connecting a plurality of links, wherein a link defining a height of the hood at the time of a collision has at least a bent portion in an axial direction in a vehicle front-rear direction. A hinge structure provided with one. 2. An obstacle detecting means for detecting a collision with an obstacle, a jumping means for jumping up a rear end of the hood in response to a collision detection from the obstacle detecting means, and provided at right and left end portions of the hood. And a hood side bracket and a vehicle body side bracket, at least one pin hole provided on one of the hood side bracket and the vehicle body side bracket, and at least one slide elongated hole provided on the other side. And a hood lock device for opening and closing the hood provided at a front end of the hood, and a hinge structure of a flip-up hood of a vehicle, comprising: A hinge structure, wherein the center link has at least one bent portion in the axial direction in the vehicle front-rear direction. 3. A hinge structure for a vehicle hood, wherein a vertical wall portion provided on each of a vehicle body pedestal portion fixed on the vehicle body and a hood pedestal portion fixed on the rear side of the hood is rotatably connected by pins. A hinge structure, wherein the vertical wall portion has at least one or more bent portions in the axial direction in the vehicle front-rear direction.